FRACTAL AGGREGATION 2)5)
T. WITTEN and L.M. SANDER described this method of clustering elements in a fractal way (as quoted by I. STEWART, 1992): "They started with a single "seed" particle, and created a growing cluster by allowing tiny circular particles to attach themselves one at a time.
Succesive new particles moved towards the cluster in a "random walk", a series of random motions in all directions… Wherever the particles hit, they stuck. This process, which is known as diffusion limited aggregation, or DIA, leads to delicate branching structures. Very similar forms are seen in nature: not only in soot, but also in the electrodeposition of metals and the growth of colonies of bacteria" (p.14).
H. SABELLI observes that the repetition of a simple fractal structure allows for the construction of complex and irregular structures, starting from a minimal genetic message. (pers. comm.)
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Bertalanffy Center for the Study of Systems Science (2020). Title of the entry. In Charles François (Ed.), International Encyclopedia of Systems and Cybernetics (2). Retrieved from www.systemspedia.org/[full/url]
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